[Flask] Flask and Nginx/Gunicorn

[Bryan Corralejo]

Although now that I think about it more, this indicates the client is closing the connection. Your client might have a timeout threshold being met when the application is under load, not an NGINX problem. 

Regards,

Bryan

> On Oct 28, 2019, at 3:11 PM, Bryan Corralejo <corralejob at gmail.com> wrote:
> 
> http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_read_timeout Might be something to look into. This sets the amount of time NGINX will wait to hear back from the upstream server. 
> 
> Regards,
> 
> Bryan
> 
>>> On Oct 28, 2019, at 2:18 PM, Rangarajan, Prakash via Flask <flask at python.org> wrote:
>>> 
>> 
>> Hi,
>> I am trying to run my flask app behind a reverse proxy using Nginx and Gunicorn. When I run some load test, I see 499’s from nginx. I believe it is a generic error code when it can’t access the upstream or takes too long for a response. Is there a good way to debug this or some configuration parameters tht can be tuned ?
>>  
>> Thanks,
>> Prakash
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